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Figure 5: Intermittent hypoxia reduced antioxidant enzymes in mouse lungs. Immunoblotting for catalase (a), SOD2 (b), and GPX (c) was performed on lungs on D4 in the 4 experimental groups. Histograms show quantitative representation of protein levels of n = 4-5 mice/group. versus Saline-IA; versus Saline-IA; versus Saline-IA; versus BLM-IA.